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For the recent expansion of renewable energy applications, wind energy conversion is receiving much interest all over the world. However, output fluctuations of wind generators cause network frequency variation in power system. This can decrease power quality and then cause a restriction of wind farm installation, especially in a small power system. Therefore this problem needs to be solved for further expansion of wind energy generation. This paper proposes an application of flywheel energy storage system (FESS) to a small power system with a wind farm for improving the network frequency quality. The validity of the proposed method is evaluated by computer simulation analyses using PSCAD/EMTDC.
Date of Conference: 6-8 Sept. 2007